Order-sorting image_Mrk 421_obsid_27016 Dispersion coordinates field image_Mrk 421_obsid_27016 Sky field image_Mrk 421_obsid_27016 Source region detail images_Mrk 421_obsid_27016 Light curve_Mrk 421_obsid_27016 Flux spectrum (1)_Mrk 421_obsid_27016 Flux spectrum (2)_Mrk 421_obsid_27016 Counts spectrum_Mrk 421_obsid_27016 Flux Preview_Mrk 421_obsid_27016